Weather in December
Temperature
Olympic National Park starts December with an average high-temperature of an icy 42.1°F (5.6°C), hinting at a minimal fluctuation from November. In December, the average low-temperature is 32.7°F (0.4°C).Rainfall
December is the month with the most rainfall. Rain falls for 17 days and accumulates 9.88" (251mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. During December, Olympic National Park regularly aggregates up to 3.11" (79mm) of snow. In Olympic National Park, during the entire year, snow aggregates up to 14.49" (368mm).Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:43 am and sunset at 4:23 pm. On the last day of December, sunrise is at 8:03 am and sunset at 4:31 pm PST.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in December
Olympic National Park, WA
- Average high temperature in December: 42°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is January (40.7°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is January (31.1°F).
Average rainfall in December
Olympic National Park, WA
- Average rainfall in December: 9.9"
The wettest month (with the highest rainfall) is December (9.9").
The driest month (with the least rainfall) is July (0.8").
Average rainfall days in December
Olympic National Park, WA
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is November (18 days).
The month with the least rainy days is July (5 days).
Average snowfall in December
Olympic National Park, WA
- Average snowfall in December: 3.1"
The month with the highest snowfall is January (7.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average daylight in December
Olympic National Park, WA
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
Olympic National Park, Washington, USA
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